Rotor Position and Speed Estimation Method for Magnetically Suspended PMSM Based on Modified Sliding Mode Observer

DOI

10.2991/mcae-16.2016.50How to use a DOI?

Keywords

magnetic flywheel energy storage system; permanent magnetic synchronous motor; sliding mode observer; lyapunov; adaptive low-pass filter

Abstract

This paper proposes a method of rotor position and speed estimation for magnetically suspended permanent magnetic synchronous motor (PMSM) based on modified sliding mode observer(SMO). In order to weaken the chatting phenomenon, the estimated back-EMF is brought in the current model and a hyperbolic tangent function is used. In order eliminate the high-order harmonic components in the estimated back-EMF, an adaptive low-pass filter whose cutoff frequency varies with the motor electrical frequency is adopted. The stability of the algorithm is proved by the Lyapunov stability theory. Finally, the validity of the method is verified by simulation and experiment.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Haicai Liu
AU  - Guangjun Li
PY  - 2016/07
DA  - 2016/07
TI  - Rotor Position and Speed Estimation Method for Magnetically Suspended PMSM Based on Modified Sliding Mode Observer
BT  - Proceedings of the 2016 International Conference on Mechatronics, Control and Automation Engineering
PB  - Atlantis Press
SP  - 210
EP  - 214
SN  - 2352-5401
UR  - https://doi.org/10.2991/mcae-16.2016.50
DO  - 10.2991/mcae-16.2016.50
ID  - Liu2016/07
ER  -